JERAJournal of Electronic Research and Application2208-35022208-3510Bio-Byword Scientific Publishing Pty. Ltd.10.26689/jera.v5i2.2193ArticleA 28GHz Power Amplifier with Analog Predistortion Linearizer in 65nm CMOS https://artdesignp.com/journal/JERA/5/2/10.26689/jera.v5i2.2193PengHe,DouYuqing2021522021-06-18This paper proposes that a radio frequency power amplifier is suitable for a 5G millimeter wave. It adopts a three-stage single-ended structure at 28GHz. An analog predistortion linearization method is used to improve the linearity of the power amplifier (PA). As a result, there is a significant improvement in power-added efficiency (PAE) and linearity is achieved. The Ka-band PA is implemented in TSMC 65nm CMOS process. At 1.2V supply voltage, the PA proposed in this paper achieves a saturated output power of 15.9dBm and a PAE of 16%. After linearization, the output power at the 1dB compression point is increased by 2dBm, with efficient gain compensation performance.

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